%0 Conference Paper
%F Oral 
%T Adiabatic model for molecule-para H$_2$ dynamics and spectroscopy
%+ Laboratoire Univers et Particules de Montpellier (LUPM)
%+ Institut de Planétologie et d'Astrophysique de Grenoble (IPAG)
%A Scribano, Yohann
%A Faure, Alexandre
%F Invité
%< sans comité de lecture
%Z LUPM:17-018
%B International MCTDH Scool
%C Orsay, France
%8 2017-09-25
%D 2017
%Z Physics [physics]/Quantum Physics [quant-ph]
%Z Physics [physics]/Physics [physics]/Atomic and Molecular Clusters [physics.atm-clus]
%Z Physics [physics]/Physics [physics]/Computational Physics [physics.comp-ph]
%Z Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph]Conference papers
%X The Time Independant Quantum Method is the reference for the calculations of cold molecule-molecule collisions. This close-coupling (CC) approach is commonly used in the cold chemistry and molecular astrophysics communities. However, the numerical cost of the CC-method increases significantlywith the size of the target molecule and some new methods should be investigated. I will present the use of an adiabatic model (and its possible extension) in the context of the CC-method. I will present the results (inelastic cross sections and rate constants) for the water colliding with para-Hydrogen molecule. The internal rotational adiabatic decoupling scheme reduces dimensional dynamics from a 5D to a 3D problem and a good agreement is found between those two calcutaions. This adiabatic reduction of dimensionality seems very promising for scattering studies involving the excitation of a heavy target molecule by a light molecular projectile.
%G English
%L hal-01632345
%U https://hal.science/hal-01632345
%~ IN2P3
%~ INSU
%~ UNIV-SAVOIE
%~ UGA
%~ CNRS
%~ INPG
%~ IRSTEA
%~ CNES
%~ OSUG
%~ LUPM
%~ IPAG
%~ AGREENIUM
%~ UNIV-MONTPELLIER
%~ LUPM_AS
%~ INRAE
%~ UGA-COMUE
%~ USMB-COMUE
%~ UM-2015-2021